Fueling a 1.7 percent decline on Friday was an unexpected drop in the University of Michigan’s consumer sentiment index, as Americans worried about stubborn inflation.

American stocks have been trailing behind their European counterparts in the month since President Donald Trump took office, amid uncertainty about the country's economic future and challenges facing its highest-performing players.

European countries see Russian President Vladimir Putin as a direct threat to their security. Trump sees a "big, beautiful Ocean" keeping the U.S. away from the Ukraine conflict.